DBC_File_Format_Documentation(4)

Vector 公司的 DBC 文件格式说明。这类DBC文件可以作为整车CAN网络的描述文件,可以描述各个CAN message(包括ID、传递参数的物理含义等)。

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(* … *) DBC File Format Documentation Version 01/2007 The definitions within brackets are optional (zero or one occurrence). The definitions within braces repeated (zero or multiple occurrences) Parentheses define grouped elements. Text in hyphens has to appear as defined. Comment. 2

3 Structure of the DBC File

The DBC file format has the following overall structure:

DBC_file =

version

new_symbols

bit_timing (*obsolete but required*)

nodes

value_tables

messages

message_transmitters

environment_variables

environment_variables_data

signal_types

comments

attribute_definitions

sigtype_attr_list

attribute_defaults

attribute_values

value_descriptions

category_definitions (*obsolete*)

categories (*obsolete*)

filter (*obsolete*)

signal_type_refs

signal_groups

signal_extended_value_type_list ;

DBC files describing the basic communication of a CAN network include the fol-lowing sections:

Bit_timing This section is required but is normally empty. nodes This section is required and defines the network nodes. messages

This section defines the messages and the signals.

The following sections aren't used in normal DBC files. They are defined here for the sake of completeness only:

signal_types sigtype_attr_list category_definitions categories